That night Marcus decided to try Mrs. Plumb's sleep
suggestions. At 8 p.m. on the dot he started to get ready
for bed so that he could make sure he got 10 hours of
sleep. He brushed his teeth, washed his face, and put on
his favorite superhero pajamas.
Then he turned his alarm clock toward the wall, shut off
his lava lamp and unplugged his nightlight. He closed the
drapes and put on a soft, cozy sleeping mask. As he
drifted off to sleep, Marcus thought about math problems.